Investigation on modulus of elasticity of fly ash-ground granulated blast furnace slag blended geopolymer concrete

Bellum, Ramamohana Reddy; Muniraj, Karthikeyan; Madduru, Sri Rama Chand

doi:10.1016/j.matpr.2019.11.299

Cited by 21 publications

(12 citation statements)

References 34 publications

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“…In this part, two materials with different densities and elastic modulus 41,42 were used in the numerical simulation of displacement of the viscoelastic arch. The materials parameters are shown in Table 3.…”

Section: Resultsmentioning

confidence: 99%

Numerical analysis of nonlinear variable fractional viscoelastic arch based on shifted Legendre polynomials

Cao

Chen

Wang

et al. 2021

Math Methods in App Sciences

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An innovative numerical procedure for solving the viscoelastic arch problem based on variable fractional rheological models, directly in time domain, is proposed and investigated. First, the nonlinear integral‐differential governing equation is established according to the variable fractional constitutive relation and geometrical relationship. Second, the nonlinear integral‐differential governing equation is transformed into algebraic equations and solved by using the shifted Legendre polynomials. Furthermore, the accuracy and effectiveness of the algorithm are verified according to the mathematical example. A small value of the absolute error between numerical and accurate solution is obtained. Finally, the dynamic analysis of viscoelastic arch is investigated to determine the displacement at different times and positions. The displacement of the viscoelastic arch is compared under various loading (uniformly distributed load and linear load). The displacement of the viscoelastic arch of different materials under the same load conditions is also investigated. The results in the paper show the efficiency of the proposed numerical algorithm in the dynamical analysis of the viscoelastic arch.

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Section: Resultsmentioning

confidence: 99%

Numerical analysis of nonlinear variable fractional viscoelastic arch based on shifted Legendre polynomials

Cao

Chen

Wang

et al. 2021

Math Methods in App Sciences

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“…Moderate compressive strength with the participation of slag in GPC at ambient curing has been reported by some investigators [21,25,[32][33][34]. Accelerated polymerization process among fly ash, GGBFS, and AAS are predominant at 60°C [25,35]. The higher gain in compressive strength is credited to the greater content of calcium in GGBFS [35].…”

Section: Effect Of Ggbfs On Compressive Strength Of Gpcmentioning

confidence: 85%

“…These calcium compounds are produced in abundance as compared to the hydrate of sodium aluminosilicate gel in a highly GGBFS content GPC which causes higher elastic modulus. Some more researchers have also observed that the increased quantity of GGBFS increases the elastic modulus value of GPC [25,28,41].…”

Section: Modulus Of Elasticity Of Gpc (Moe)mentioning

confidence: 94%

“…However, surface cracks caused by the shrinkage of the alkali-activated slag concrete have been reported by some investigators [10]. Moderate compressive strength with the participation of slag in GPC at ambient curing has been reported by some investigators [21,25,[32][33][34]. Accelerated polymerization process among fly ash, GGBFS, and AAS are predominant at 60°C [25,35].…”

Section: Effect Of Ggbfs On Compressive Strength Of Gpcmentioning

confidence: 99%

“…The concrete-filled moulds wrapped with plastic sheet were left at ambient temperature for 60 minutes. After 60 minutes of ambient curing, the moulds [21,25] were kept in an oven for heat curing at a controlled temperature of 60°C for 24 hours. The oven-cured specimen moulds shown in Figure 3 were kept at an ambient temperature of 24-26°C and relative humidity of 60 ± 5% until testing.…”

Section: Curing Of Samplesmentioning

confidence: 99%

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Effect of GGBFS on Workability and Strength of Alkali-activated Geopolymer Concrete

Gautam

Mishra

2021

Civ Eng J

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This paper focuses on the development of a concrete material by utilizing fly ash and blast furnace slag in conjunction with coarse and fine aggregates with an aim to reduce pollution and eliminate the use of energy extensive binding material like cement. Alternative binding materials have been tried with an aim to get rather an improved concrete material. Alkali-Activated Solution (AAS) made of the hydroxide and silicate solutions of sodium was adopted as the liquid binder whereas, Class F” fly ash and Ground Granulated Blast Furnace Slag (GGBFS) mixed in dry state were used as the Geopolymer Solid Binder (GSB). The liquid binder was used to synthesize the solid binder by thermal curing. The paper investigates the use, influence and relative quantities of the liquid and solid binders in the development of the alkali-activated GGBFS based Geopolymer Concrete (GPC). Varying ratios of AAS to GSB were taken to assess their optimum content. Further, different percentages of GGBFS were used as a partial replacement of Class F fly ash to determine the optimum replacement of GGBFS in the GPC. In order to assess their effects on various properties test samples of cubes, cylinders and beams were cast and tested at 3, 7, and 28 days. Thermal curing of GPC has also resorted for favorable results. It was found that AAS to GSB ratio of 0.5 and GGBFS content of 80% yielded the maximum strength with a little unfavorable effect on workability. The overall results indicated that AAS and GGBFS offer good geopolymer concrete which will find its applicability in water scarce areas. Doi: 10.28991/cej-2021-03091708 Full Text: PDF

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Dynamic analysis of viscoelastic foundation plate with fractional Kelvin–Voigt model using shifted Bernstein polynomials

Qu,

Zhang,

Cui

et al. 2023

Math Methods in App Sciences

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The fractional Kelvin–Voigt (FKV) viscoelastic constitutive model has been employed to build the fractional differential governing equation of viscoelastic foundation plate. Shifted Bernstein polynomial algorithm is implemented to solve the governing equations on a direct time domain numerically. Furthermore, the validity of the method is demonstrated by convergent analysis and error estimation of a math example. Finally, the dynamic analysis of viscoelastic foundation plate under different uniform loads. The movement of plate with different aspect ratios in viscoelastic foundation under the same load is studied. The stress of viscoelastic foundation plates of two materials under identical loading situations is investigated.

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Investigation on modulus of elasticity of fly ash-ground granulated blast furnace slag blended geopolymer concrete

Cited by 21 publications

References 34 publications

Numerical analysis of nonlinear variable fractional viscoelastic arch based on shifted Legendre polynomials

Numerical analysis of nonlinear variable fractional viscoelastic arch based on shifted Legendre polynomials

Effect of GGBFS on Workability and Strength of Alkali-activated Geopolymer Concrete

Dynamic analysis of viscoelastic foundation plate with fractional Kelvin–Voigt model using shifted Bernstein polynomials

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